AT349847B - PROCESS AND SYSTEM FOR CHEMICAL SURFACE TREATMENT OF METAL OBJECTS IN A CLOSED CIRCUIT WITH CHEMICAL RECOVERY WITHOUT DETOXIFICATION SYSTEMS - Google Patents

PROCESS AND SYSTEM FOR CHEMICAL SURFACE TREATMENT OF METAL OBJECTS IN A CLOSED CIRCUIT WITH CHEMICAL RECOVERY WITHOUT DETOXIFICATION SYSTEMS

Info

Publication number
AT349847B
AT349847B AT924176A AT924176A AT349847B AT 349847 B AT349847 B AT 349847B AT 924176 A AT924176 A AT 924176A AT 924176 A AT924176 A AT 924176A AT 349847 B AT349847 B AT 349847B
Authority
AT
Austria
Prior art keywords
chemical
surface treatment
closed circuit
metal objects
detoxification systems
Prior art date
Application number
AT924176A
Other languages
German (de)
Other versions
ATA924176A (en
Inventor
Asbjorn Ludvig Olsen
Oyvind Vige Bjornsen
Sigbjorn Thomas Halvorsen
Original Assignee
Norsk Hydro As
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Norsk Hydro As filed Critical Norsk Hydro As
Publication of ATA924176A publication Critical patent/ATA924176A/en
Application granted granted Critical
Publication of AT349847B publication Critical patent/AT349847B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/36—Regeneration of waste pickling liquors
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Chemically Coating (AREA)
AT924176A 1975-12-23 1976-12-14 PROCESS AND SYSTEM FOR CHEMICAL SURFACE TREATMENT OF METAL OBJECTS IN A CLOSED CIRCUIT WITH CHEMICAL RECOVERY WITHOUT DETOXIFICATION SYSTEMS AT349847B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO754368A NO138413C (en) 1975-12-23 1975-12-23 PROCEDURE AND SYSTEMS FOR CHEMICAL SURFACE TREATMENT OF METAL OBJECTS IN CLOSED CYCLES WITH CHEMICAL RECYCLING WITHOUT DETERGENT SYSTEMS

Publications (2)

Publication Number Publication Date
ATA924176A ATA924176A (en) 1978-09-15
AT349847B true AT349847B (en) 1979-04-25

Family

ID=19882620

Family Applications (1)

Application Number Title Priority Date Filing Date
AT924176A AT349847B (en) 1975-12-23 1976-12-14 PROCESS AND SYSTEM FOR CHEMICAL SURFACE TREATMENT OF METAL OBJECTS IN A CLOSED CIRCUIT WITH CHEMICAL RECOVERY WITHOUT DETOXIFICATION SYSTEMS

Country Status (4)

Country Link
AT (1) AT349847B (en)
DE (1) DE2656103A1 (en)
NO (1) NO138413C (en)
SE (1) SE7614144L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4220401A1 (en) * 1992-06-22 1993-12-23 Eisenmann Kg Maschbau Water circulation management for installations for workpiece etc. treatment in baths - including an evaporation unit for production of rinsing water
DE4307591A1 (en) * 1992-06-22 1994-09-15 Eisenmann Kg Maschbau Process for the reduction of nitrite concentration in phosphate bath systems

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910430B2 (en) * 1976-04-19 1984-03-08 日本ペイント株式会社 Phosphate film chemical conversion treatment method
DE2903008A1 (en) * 1979-01-25 1980-07-31 Schering Ag METHOD FOR EVAPORATION AND, IF NECESSARY, RECOVERY OF WATER FROM AQUEOUS SOLUTIONS
US6235111B1 (en) * 1998-11-25 2001-05-22 Ez Environmental Solutions, Corporation Closed-loop phosphatizing system and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4220401A1 (en) * 1992-06-22 1993-12-23 Eisenmann Kg Maschbau Water circulation management for installations for workpiece etc. treatment in baths - including an evaporation unit for production of rinsing water
DE4307591A1 (en) * 1992-06-22 1994-09-15 Eisenmann Kg Maschbau Process for the reduction of nitrite concentration in phosphate bath systems

Also Published As

Publication number Publication date
DE2656103A1 (en) 1977-07-07
ATA924176A (en) 1978-09-15
NO754368L (en) 1977-06-24
NO138413B (en) 1978-05-22
NO138413C (en) 1978-08-30
SE7614144L (en) 1977-06-24

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee